Hi leelinn:
Unfortunately it will not be possible to manage these files, but you can now (in version 2.2.0 or recent developmental versions) open them and add all files inside to your downloads using "ed2k -e file.emulecollection".
Could you please tell me your ideas of managing emulecollections? I cannot promise that they will be included into aMule, but I would like to hear your ideas and will consider it.
I think that only read operations should be done inside aMule (you should be able to select the links in the collection you want to download and optionally add them to a category) and everything else in another application.
These things might appear in aMule 2.2.1 or later versions, depending on my time and motivation.